My 87 NA idles really low on start up (800-900rpm), the only way I can really keep it running is to rev it everytime I start her up. How might I go about correcting this?

I apologize for my noobishness, but I've got to start somewhere.

Any help would be much appreciated.

 

i had the same problem i found it to be a vacumn leak i fixed it by reconnecting a vacumn line that was left unconnected by someone during the engine swap

i'd look thru the bay to try and find a line that isnt connected

your car looks good i like the yellow and dark windows

 

also when you find the line spray some starter fluid around it to see if the pitch changes

 

800-900 is low idle?

my TII idles at 650 rpm somes as low as 600 when its cold! (according the the AFC-II)

 

My na idles at 200-250 rpm. I thought they idled high if there was a vac leak, and I adjusted the tps, and the idle screw has zero effect on idle speed. At least it never stalls :-D

 

200?!?! are u sure ur tach is working? LOL

that can't be right

 

It should idle at ~750rpms.

When I get done with my work this winter I am going to have it set to idle at ~1,000rpms.

 

Ya, stock idle is 750rpm like Mason said. I had trouble because it was idling too high at 1000rpms.

 

could be your bacv

 

Na, the tach works fine, the accelerated warm up still works, so it idles at 1500 for a few minutes. But when it warms up, the tach needle stays barely above the lowest line... oh well. I thought vac leaks only allowed high idle, so it can't be that? But it doesn't stall, that's the main thing...later

 

dood, whatever on the 200rpm idle. When mine would dip below 500 all of my idiot lights would come on because they thought the car was gonna die.

And on the original poster....sounds like your car is idling perfectly. Don't fix what's not broken.

 

my t2 idles at about 800 rpms if that helps any and i know if my idle goes below 500 the lights turn on how is that your is on at 200rpms?

 

I don't know, the lights dim a little when I press the brake though. Sorry to threadjack. I'll take a pic and start a new thread tonight. I really don't know how to fix it, but the tps is adjusted properly, and the idle adjust does nothing. Oh, and the idle speed for the original poster sounds dead on. I was under the impression that the factory idle speed was 750 rpm's...later

 

you just cant read a tach..

youre idleing at 700 or 750, jsut like you should be.

 

I know that now. I posted another thread w/a pic, and everyone pointed that out to me. I didn't realize that the second large tick mark was a 500 instead of 0...later